# workerd

> The JavaScript and Wasm runtime behind Cloudflare Workers

The open-source runtime that powers Cloudflare Workers, usable for local development, self-hosting Workers, or as a programmable HTTP proxy.

- Source: https://github.com/cloudflare/workerd
- Homepage: https://blog.cloudflare.com/workerd-open-source-workers-runtime/
- License: Apache-2.0
- Language: C++
- Stars: 8805
- Forks: 766
- Contributors: 263
- Last commit: 2026-10-04
- Latest release: v1.20261004.1 (2026-10-04)
- Purpose: Infra & DevOps
- Runs on: Docker / self-host, CLI
- For: Enterprise

## Worth score: 77/100

How much DigGitHub recommends it, from activity, adoption, docs, license and security signals.

- Popularity: 20/25
- Momentum: 10/20
- Maintenance: 25/25
- Community: 11/15
- Readiness: 11/15

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Source page: https://diggithub.com/cloudflare/workerd
Updated: 2026-10-04